RabbitMQ WebSocket 404 Not Found - nginx

Question

I'm running rabbitmq-server v3.3.5-1.1 on the Debian v8.2. I have enabled rabbitmq_web_stomp and rabbitmq_web_stomp_examples as per suggestion in the docs:
rabbitmq-plugins enable rabbitmq_web_stomp
rabbitmq-plugins enable rabbitmq_web_stomp_examples
All examples exposed at http://127.0.0.1:15670 work as intended, but they all use SockJS rather than native browser's WebSocket:
// Stomp.js boilerplate
var ws = new SockJS('http://' + window.location.hostname + ':15674/stomp');
var client = Stomp.over(ws);
I would like to stick to the WebSocket so I tried what was suggested in the docs:
var ws = new WebSocket('ws://127.0.0.1:15674/ws');
This throws an error to my face:
WebSocket connection to 'ws://127.0.0.1:15674/ws' failed: Error during WebSocket handshake: Unexpected response code: 404
Further tests with netcat confirm 404:
# netcat -nv 127.0.0.1 15674
127.0.0.1 15674 open
GET /ws HTTP/1.1
Host: 127.0.0.1
HTTP/1.1 404 Not Found
Connection: close
Content-Length: 0
Date: Sat, 23 Jan 2016 20:15:13 GMT
Server: Cowboy
Obviously cowboy does not expose /ws path, so I wonder:
Is it possible to reconfigure cowboy in this situation? How? Is it worth it?
May I use nginx in the place of the cowboy (preferred option)? How?
What other options do I have?
EDIT
RabbitMQ docs are misleading. Correct WebSocket URI:
http://127.0.0.1:15674/stomp/websocket

Answer 1

good job, but:
new WebSocket('http://127.0.0.1:15674/stomp/websocket')
VM98:2 Uncaught DOMException: Failed to construct 'WebSocket': The URL's scheme must be either 'ws' or 'wss'. 'http' is not allowed.(…)(anonymous function) ...
need to use ws/wss-schema:
new WebSocket('ws://127.0.0.1:15674/stomp/websocket')
WebSocket {url: "ws://127.0.0.1:15674/stomp/websocket", readyState: 0, bufferedAmount: 0, onopen: null, onerror: null…}